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Surface Properties of Powder Mixed EDM of TaW Alloy Material


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Surface Properties of Powder Mixed EDM of TaW Alloy Material
HU Fu-qiang1ZHANG Hong1WANG Zhen-long1ZHAO Wan-sheng2HU Ding1YU Yang1
1.School of Mechatronic Engineering,Harbin Institute of Technology,Harbin 150001,China;2.School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200030,China
TaW alloy material powder mixed electrical discharge machining surface properties
Two kinds of specimens made of a kind of TaW alloy material with high strength and high melting point about 3 000 ℃ are processed by a traditional EDM(Electrical Discharge Machining) and a powder mixed EDM separately,and its surface characteristics are tested.After processing,their surfaces have the roughness of 0.542 μm and 0.174 μm,and the modulus of elasticity of 280 GPa and 410 GPa,respectively.Moreover,the surface friction-resistance of the specimens are studied on a CJS111A friction and wear tester.The micro-appearances on the frictionized surfaces are observed and analyzed by using a SEM.The test results indicate that the better friction-resistance ability the specimen has,the higher wear rate the frictionized balls display in the test.The wear rates of frictionized ball corresponding to the two processed surfaces are 2.4×10-5 mm3/m for the traditional EDM and 1.4×10-4 mm3/m for the powder mixed EDM,which shows the latter is 5.8 times of the former.The results show that the powder mixed EDM is better at improving the surface properties of specimen than the traditional EDM,which means that the technique of powder mixed EDM has a great potential in processing the special material.


[1] Furu tan iK, Saneto A, Takezaw a H, et a.l Accre tion o f titan ium carb ide by electr ica l discharge m ach in ing w ith pow de r suspended in wo rking fluid [ J]. Journa l o f Internationa l Societies fo r Prec ision Eng ineer ing and Nanotechno logy, 2001, 25: 138- 144.
[2] S im ao J, Lee H G, Asp inw a ll D K, et a.l W orkpiece surface m od ifica tion using e lectrical discharge m ach i n ing [ J]. Interna tiona l Journa l o fM achine Too ls and M anu facture, 2003, 43 ( 2): 121- 128.
[3] Pecas P, H enr iques E. Influence of silicon powder m ix ed d ie lectr ic on conventiona l electr ica l d ischarg e m achin ing [ J] . Inte rnational Journal o fM achine Tools andM anu facture, 2003, 43: 1 465- 1 471.
[4] ZhaoW S, M eng Q G, W ang Z L. The app lication o f research on powder m ixed EDM in rough m ach in ing [ J ]. Jou rnal of M a terials Processing Techno logy, 2002, 129: 30- 33.
[5] Yo shiyuki Uno, Ak ira Okada, Yasuh iro H ayash,i et a.l Surface m od ification by EDM w ith n icke l powder m ixed flu id [ J]. Inte rnational Journal of E lectr ica l M ach ining, 1999, 4( 1): 47- 52.
[6] Robert K, M artine D B, Patrick G. W ettab ility o f sili con nitride ceram ic composites by silver, copper and silver coppe r titan ium a lloy s [ J]. Journa l of the Euro pean C eram ic So ciety, 2005 , 25: 1 757- 1 763.
[7] Fukuzawa Y, M ohr i N, Tan i T, et a.l E lectr ica l dis charge m ach in ing properties o f noble crystals [ J ]. Journal o f M ater ia ls Pro cessing Techno logy, 2004, 149: 393- 397.
[8] 李立青, 赵万生, 狄士春, 等. 气体介质中电火花铣 削加工工艺实验研究[ J] . 南京理工大学学报, 2006, 30( 2): 12- 16.
[9] Guu Y H. AFM sur face imag ing o f AIS I D2 too l stee l m ach ined by the EDM pro cess [ J]. Applied Surface Sc ience, 2005, 242: 245- 250


Last Update: 2012-12-05